CONTROL COMMUNICATION EQUIPMENT
USING 2W TELEPHONES (CCEO)
(RDSO SPECIFICATION: RDSO/SPN/TC/66/07)
CONTROL ROOM EQUIPMENT
MODEL : CRE-121
TEST ROOM EQUIPMENT
MODEL : TRE-805
CONTROL TELEPHONES
(TEC APPROVED EPBT)
WAY STATION EQUIPMENT
MODEL: MTWE-121
BASIC FEATURES
 Selective call facility from Controller to 80 Way Station Telephones
 Five Group call and General call (ALL CALL) facility from Controller (CRE&TRE)
 Commonly available EPBT (2W Telephone) is used as Control Telephone
 Much louder telephone ring at Way Stations with proper RBT
 Single push button operation from CRE for calling Way station Telephones
 Call facility from CRE and TRE to Way Stations and Local Telephones
 LED and Alphanumeric LCD display to facilitate different operations
 Different Ring tones for Station call, Group call and General call
 Clear indication for Way station Tel status – ringing, busy or disconnected
 4 Telephones can be connected to a Way Station Equipment; all 4 telephone for
one CNL or 2 telephone each for two CNL circuits
 Low cost of cabling – only a single cable pair for each telephone
 Way Station Equipment is mounted on OFC equipment rack and works from
48VDC ; consumes less than15 Watt
 No need of individual 12V PSU at ASM room for way station equipments
 Intercom facility between Way Station telephones with automatic priority to
accept calls from controller
 Provision for intercom facility from one station to another
 Cordless telephone may be used as control telephone for ASM’s convenience
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Control Communication Equipments for OFC System (CCEO) is used for
communication through Section Control, Deputy Control, Traction Power
Control, Engineering Control etc. between Control Office & Way Stations. This
system permits working of voice communication and signaling through an
Optical Fibre Communication System and also works through RE cable with
some changes of input and output impedances. The system is designed to
work on 4 wire VF Channel having characteristic impedance of 600 ohms.
The CCEO system (CRE/TRE/MTWE etc) works on 48V DC Power supply.
Normally same 48V PSU and Battery bank which is used for other OFC
equipments are used for CCEO equipments. Power consumption is very less.
(Typically 12 watt for one way station equipment). CCEO System conforms to
RDSO specification No. RDSO/SPN/TC/ 66/2007
SYSTEM SEGMENTS:
CONTROL ROOM EQUIPMENT (CRE) :
This equipment is located on Controller’s desk. It is equipped with desk top
microphone and loudspeaker. Selective call, Group call and General call to the
way station control telephones can be initiated from CRE. It has many added
features over the old control room equipments like key programming, key
code uploading and downloading facility etc. It is also possible to initiate a
call to a Way Station Equipment using old TC-60 code structure (DTMF way
station equipments). It is also possible to call 20 number Local Telephones
installed in or around Headquarter Control room.
WAY STATION EQUIPMENT (MTWE):
The Multi-Telephone Way Station Equipments (MTWE) are located at
different way stations and installed in OFC huts. 4 telephones (commonly
available EPBT as per TEC spec with impulse dialing facility) can be
connected to it which are used as Control Telephones. All the telephones have
separate call numbers and can be easily programmed by the user.
Ringing pattern of the way station telephone is different for different types of
call (Selective, Group or General call) and appropriate RBT is sent back to the
controller.
All the 4 telephones connected to the MTWE can be dedicated to one control
circuit or if necessary, the MTWE can be configured for two control circuits
with 2 telephones for each control circuit. Intercom facility is provided
between a pair of telephones without any disturbance to the controller.
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It is also possible to make intercom calls between telephones located at
different way stations. Only a pair of wire is required for each telephone and
that way cost of cabling is substantially low. Separate power supply
arrangement is not necessary at the location where telephone is installed.
TEST ROOM EQUIPMENT (TRE) :
The Test Room Equipment is to be installed at Test room for monitoring
control circuit performance. It is possible to call any Way station telephone
both as per new CCEO specification ( TC-66) or as per old DTMF specification
(TC-60). Any of the 20 Local Telephones can also be called from TRE by
using the numeric push button. Patching and unpatching of Remote
Patching Equipment located at remote locations is also possible from Test
Room Equipment. Monitoring of controller’s voice is possible from this
equipment.
In-built voice recorder can be provided in TRE to record the control circuit
voice on a SD card/ Pen drive for at least last 100 hours which can be
transferred to or replayed by a PC . (optional facility)
LOCAL TELEPHONE EQUIPMENT (LTE) :
With the help of LTE it is able to call to 20 Local Telephones from CRE of TRE.
THREE WAY AMPLIFIER (TWA) :
Three Way Amplifier is required when more than one MTWE is to be deployed
at one location. It has the features like proper Impedance matching, No loss
in branching.
REMOTE PATCHING EQUIPMENT (RPE) :
The RPE is able to interconnect two VF 4 wire channels of 600 ohms
impedance to each other by a local command from the RPE panel or from a
remote command from TRE. RPE can be installed anywhere on the control
section, from test room to the far end station point. It is possible to manage
up to 9 RPE on a control circuit.
TWO-WIRE DIALING CONTROL TELEPHONE (TDCT) :
This is a standard electronic push button telephone (EPBT) with impulse
dialing facility as per TEC spec no. TEC/ GR/TEL–02/04 SEP02. This works as
a Control Telephone. The telephone will ring whenever it is called by CRE or
TRE. Wherever necessary, Two line EPBT may be used so that two controls
can be accommodated in one telephone to save ASM table space.
Cordless telephones may also be used as Control telephones to facilitate ASM
working.
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DIFFERENT TYPES OF USES OF CCEO EQUIPMENTS
BENTRON POWER STSTEMS
21/1 KEDARNATH CHATTERJEE ROAD, BEHALA, KOLKATA-700034
(033) 2396 6430, 2398 9600 ; email:bentron.kolkata@gmail.com
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